diff --git a/src/api/layers/group.layer.ts b/src/api/layers/group.layer.ts
index 9c8196667..f3526b84d 100644
--- a/src/api/layers/group.layer.ts
+++ b/src/api/layers/group.layer.ts
@@ -91,7 +91,7 @@ export class GroupLayer extends RetrieverLayer {
   }
 
   /**
-   * Revokes group-invite link and generate new one.
+   * Revokes group-invite link and generates a new one.
    * @category Group
    * @param chatId
    * @returns Invitation link
@@ -107,10 +107,12 @@ export class GroupLayer extends RetrieverLayer {
   }
 
   /**
-   * Generates group-invite link
+   * Displays group info from an invitation link (or invitation ID)
    * @category Group
    * @param inviteCode
-   * @returns Invite code from group link. Example: CMJYfPFqRyE2GxrnkldYED
+   * @returns Invite code or group link. Example: CMJYfPFqRyE2GxrnkldYED
+   * @example getGroupInfoFromInviteLink('https://chat.whatsapp.com/invite/CMJYfPFqRyE2GxrnkldYED')
+   * @example getGroupInfoFromInviteLink('CMJYfPFqRyE2GxrnkldYED')
    */
   public async getGroupInfoFromInviteLink(inviteCode: string) {
     inviteCode = inviteCode.replace('chat.whatsapp.com/', '');
@@ -232,9 +234,11 @@ export class GroupLayer extends RetrieverLayer {
     return participants.filter((p) => p.isAdmin).map((p) => p.id);
   }
   /**
-   * Join a group with invite code
+   * Join a group with an invite code or link
    * @category Group
    * @param inviteCode
+   * @example joinGroup('https://chat.whatsapp.com/invite/CMJYfPFqRyE2GxrnkldYED')
+   * @example joinGroup('CMJYfPFqRyE2GxrnkldYED')
    */
   public async joinGroup(inviteCode: string) {
     inviteCode = inviteCode.replace('chat.whatsapp.com/', '');
diff --git a/src/api/layers/sender.layer.ts b/src/api/layers/sender.layer.ts
index 74c9f2fa2..79c237fc4 100644
--- a/src/api/layers/sender.layer.ts
+++ b/src/api/layers/sender.layer.ts
@@ -235,7 +235,7 @@ export class SenderLayer extends ListenerLayer {
    * Sends image message
    * @category Chat
    * @param to ID of the chat to send the image to
-   * @param base64 File path, HTTP link, or a base64-encoded data URI (with mime type)
+   * @param base64 A base64-encoded data URI (with mime type)
    * @param filename
    * @param caption
    * @param quotedMessageId Quoted message id
diff --git a/src/api/model/group-metadata.ts b/src/api/model/group-metadata.ts
index 40f29484a..3f20da588 100644
--- a/src/api/model/group-metadata.ts
+++ b/src/api/model/group-metadata.ts
@@ -18,9 +18,15 @@
 import { Wid } from './wid';
 
 export interface GroupMetadata {
+  /** unique identifier for the group */
   id: Wid;
+  /** timestamp of when the group was created */
   creation: number;
   owner: Wid;
+  /** title/name of the group */
+  subject: string;
+  subjectTime: number;
+  /** description of the group */
   desc: string;
   descId: string;
   descTime: number;
@@ -29,13 +35,32 @@ export interface GroupMetadata {
   announce: boolean;
   noFrequentlyForwarded: boolean;
   ephemeralDuration: number;
+  membershipApprovalMode: boolean;
+  memberAddMode: 'admin_add' | string; //TODO: complete the union type and then remove `strong`
+  reportToAdminMode: boolean;
+  /** current amount of members including admins */
   size: number;
   support: boolean;
   suspended: boolean;
   terminated: boolean;
+  uniqueShortNameMap: Object; //TODO: type is too generic
+  isLidAddressingMode: boolean;
   isParentGroup: boolean;
+  isParentGroupClosed: boolean;
   defaultSubgroup: boolean;
+  generalSubgroup: boolean;
+  generalChatAutoAddDisabled: boolean;
+  allowNonAdminSubGroupCreation: boolean;
+  lastActivityTimestamp: number;
+  lastSeenActivityTimestamp: number;
+  incognito: boolean;
+  hasCapi: boolean;
   displayCadminPromotion: boolean;
   participants: any[];
+  /** members who applied for membership but still need admin approval */
   pendingParticipants: any[];
+  /** former members who left the group or were kicked out */
+  pastParticipants: any[];
+  membershipApprovalRequests: any[];
+  subgroupSuggestions: any[];
 }